
/* This is a more reliable delay than a few short jmps. */
#define iodelay() \
	asm("pushl %eax; inb $0x80,%al; inb $0x80,%al; popl %eax")

#define inl(port) \
({ unsigned long _tmp__; \
	asm volatile("inl %%dx, %0" : "=a" (_tmp__) : "d" ((unsigned short)(port))); \
	_tmp__; })

#define inl_p(port) ({		\
	unsigned long r;	\
	r = inl(port);		\
	iodelay();		\
	r;			\
})

#define inw(port) \
({ unsigned short _tmp__; \
	asm volatile(".byte 0x66; inl %%dx, %0" : "=a" (_tmp__) : "d" ((unsigned short)(port))); \
	_tmp__; })
	
#define sys_inw(port) \
({ unsigned short _tmp__; \
	asm volatile("inw %%dx, %0" : "=a" (_tmp__) : "d" ((unsigned short)(port))); \
	_tmp__; })

#define inw_p(port) ({		\
	unsigned short r;	\
	r = inw(port);		\
	iodelay();		\
	r;			\
})

#define inb(port) \
({ unsigned char _tmp__; \
	asm volatile("inb %%dx, %0" : "=a" (_tmp__) : "d" ((unsigned short)(port))); \
	_tmp__; })

#define inb_p(port) ({		\
	unsigned char r;	\
	r = inb(port);		\
	iodelay();		\
	r;			\
})


#define outl(port, val) \
({ asm volatile("outl %0, %%dx" : : "a" (val) , "d" ((unsigned short)(port))); })

#define outl_p(port, val) ({	\
	outl(port, val);	\
	iodelay();		\
})

#define outw(port, val) \
({asm volatile(".byte 0x66; outl %0, %%dx" : : "a" ((unsigned short)(val)) , "d" ((unsigned short)(port))); })

#define outw_p(port, val) ({	\
	outw(port, val);	\
	iodelay();		\
})

#define outb(port, val) \
({ asm volatile("outb %0, %%dx" : : "a" ((unsigned char)(val)) , "d" ((unsigned short)(port))); })

#define outb_p(port, val) ({	\
	outb(port, val);	\
	iodelay();		\
})


/* Inline code works just as well for 16-bit code as for 32-bit.  */
#define i16_iodelay()		iodelay()
#define i16_inl(port)		inl(port)
#define i16_inl_p(port)		inl_p(port)
#define i16_inw(port)		inw(port)
#define i16_inw_p(port)		inw_p(port)
#define i16_inb(port)		inb(port)
#define i16_inb_p(port)		inb_p(port)
#define i16_outl(port, val)	outl(port, val)
#define i16_outl_p(port, val)	outl_p(port, val)
#define i16_outw(port, val)	outw(port, val)
#define i16_outw_p(port, val)	outw_p(port, val)
#define i16_outb(port, val)	outb(port, val)
#define i16_outb_p(port, val)	outb_p(port, val)


